Hi friends here is an another interesting post on wallpaper for Samsung S5603 just copy the following link and download the Wallpaper creator for samsung s5603
http://www.softpedia.com/get/Multimedia/Graphic/Graphic-Others/Samsung-GT-S5603-Wallpaper-Creator.shtml
its very simple to create wallpaper for your s5603 just drag and drop the 3 images in to the wallpaper creator software at your own desire and save it and enjoy. only disadvantage is you can create wallpaper only with 320*240 resolution image and you can download it from www.zedge.net for free
comments are welcomed